Peanut late high-yield technology

Peanut late high-yield technology

1. Time irrigation and drainage. During the ripening period of fruit ripening, the water consumption of the plant is sharply reduced, and the water absorption capacity of the root is weakened. If the autumn rain is too much and the drainage is poor, the root system will rot, the stems will be weak, and the fruit will be damaged. Therefore, it is necessary to pay attention to the timely removal of stagnant water. In addition, although the water consumption of the plant in this period is small, but the drought is encountered, the root system is easy to decline, causing the top leaves to fall off, and the stems and branches are also declining and the yield is reduced. Therefore, it is still necessary to water in time when it is dry.

2. Control the tree to increase fruit. The pod-forming period is the most vigorous period of peanut growth, and it is also the peak period of fertilizer and water. Insufficient water and fertilizer will affect the plant growth process and pod fullness. However, the foundation of soil fertility and the onslaught of fertilizer and water during the flowering period can also cause the plants to grow long and prematurely, causing the field to close, the fruit needles hanging high and the needles are not true and the fruit is not full. Therefore, 30 to 50 days after the initial flowering, the main stem is as high as 35 to 40 cm, and the first pair of side branches is 8 to 10 knots, and the average length is greater than 10 cm, and the chemical regulating agent should be sprayed on the leaf surface in time.

3. Foliar spray fertilizer. After the pod-forming period, the absorption capacity of peanut roots is weakened, the main nutrients of the stems and leaves are not enough, and the leaves at the base of the stems gradually fall off. Before harvesting, there are only 4 to 6 parietal leaves per stem, which is to maintain the vitality of the whole plant and carry out photosynthesis. basis. In order to enhance the leaf vigor and prolong the functional period, the foliar fertilizer should be sprayed from the later stage of the result, sprayed once every 7 to 10 days, and sprayed a total of 2 to 3 times. Each time, 500 grams of urea per acre, 100 grams of potassium dihydrogen phosphate, diluted with 50 kg of water, sprayed.

4. Prevention and treatment of insects. There are mainly leaf spot, rust, cotton bollworm, aphids, mites and other pests. Leaf spot disease should be sprayed once every 10 to 15 days according to the condition, and even sprayed 3 to 4 times; rust begins to take medicine when seeing the diseased plant, spraying once every 10 to 15 days, even spraying 2 to 3 Secondly, the commonly used medicaments are 70% methyl thiophanate WP 1500 times solution, 75% chlorothalonil WP 600 times solution, 20% green milk copper emulsifiable concentrate 30% green emulsifiable concentrate 500-600 times solution. Pests should be treated early.

5. Harvest at the right time. It is especially important to determine the appropriate harvest period for peanuts. Generally, the following three aspects can be used to judge whether the peanuts have reached the harvest period: one looks at the growth period. The growth period of common peanut varieties is about 125 days. Second, look at the temperature. When the average temperature of day and night is below 12 °C, the plants basically stop growing and can be harvested at this time. Look at the plants. Under normal circumstances, when peanuts enter the late stage, most of the nutrients in the plants have been transported to the pods, and the plants show signs of aging, that is, the top stops growing, the upper leaves turn yellow, and the base and middle leaves fall off. The pods are full and can be harvested.

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